SARASOTA -- A Bradenton man faces false imprisonment and battery charges after he picked up another man on a Sarasota street and threatened him with a gun, according to Sarasota police.

Officers arrested Dion D. Barnes after a vehicle pursuit. The victim in the case had given officers a description of a vehicle matching the car Barnes was driving, police said.

Police said the incident started about 6:20 a.m. when Barnes picked up the victim near the intersection of 17th Street and Tamiami Trail in Sarasota. During the ride, Barnes pulled a handgun and threatened the victim. They then drove to a parking garage, where Barnes sexually assaulted the victim, according to police.

Barnes then drove the victim back to where he had picked him up and released him.

After he was arrested, Barnes admitted to police he had picked up the victim, whom he first believed to be a woman, and agreed to pay for sex, according to a report. At the parking garage, Barnes told police "he began to question the gender of the victim, which upset the victim," who then demanded more money.

Officers did find a BB gun in Barnes' vehicle, but Barnes said he never showed it to the victim.

Barnes faces charges of false imprisonment, aggravated assault, battery, motor vehicle theft, fleeing police at high speed, reckless driving and driving with a suspended license. He is being held without bond at the Sarasota County jail.